Records consist primarily of administrative, personnel, and country files, which show a country's participation in and contribution to a mission, ca. 1948-1983, for each United Nations field operation or mission. Included are photostatic copies of 29 separate I-HJK demarcation line maps for the Palestine area and military approval signatures; general administrative files, 1949-1955; administrative files concerning the United Nations Service Medals (Korean Medals), 1950-1956; United Nations Operation in the Congo (ONUC)/United Nations Emergency Force (UNEF) country and administrative files (list A), 1959-1962; ONUC administrative files including a manual of procedures for the Leopoldville Finance Office and Field Offices as of 1 January and ONUC casualty file, 1963- 1964, comprising cable and memo notifications to Headquarters and Delegations; ONUC administrative country and finance files, 1963-1964; UNEF administrative country files (List B), 1963-1964; UNEF strength reports (List B), 1963-1965; UNEF supply and logistic country files, 1965; and ONUC administrative country files for 1965.

Fonds consists of the following Sub-fonds:AG-031-003 United Nations Field Operations DivisionAG-031-002 United Nations Field Operations ServiceAG-031-001 United Nations Field Service